Dr. Aleksejs Udalcovs received the degree of Doctor of Engineering Science (Dr.sc.ing.) in Electronics and Telecommunications (specialized in Optical Communications) from Riga Technical University (RTU), Riga, Latvia, in June 2015.

From 2012 to 2016, he was working as a visiting PhD researcher within the Swedish Institute's Visby programme, and then as a postdoctoral researcher within the EU project GRIFFON at School of Information and Communication Technology (ICT), KTH Royal Institute of Technology, Stockholm, Sweden. In mid-2015, he joined the KTH/Acreo High Speed Transmission Lab. Since the end of 2016, he is a postdoctoral researcher within Swedish SRA ICT-The Next Generation (TNG) project "SCENE - Spectrum, Cost and Energy Trade-offs in Optical Networks" (formerly "Fixed/Flex Grid Optical Networks — Impact of the Spectrum Fragmentation on Cost and Energy Efficiency") at Networking and Transmission Laboratory (NETLAB) of RISE Acreo AB, which is the part of Research Institutes of Sweden (RISE).